staging: rtl8188eu: use safe iterator in tx_beacon_hdl()

This loop calls list_del_init() on the list iterator so it has to use
the _safe() iterator or it leads to an endless loop.

Fixes: 23017c8842d2 ("staging: rtl8188eu: Use list iterators and helpers")
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/YL5iunD5ilf+mKPR@mwanda
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/rtl8188eu/core/rtw_mlme_ext.c b/drivers/staging/rtl8188eu/core/rtw_mlme_ext.c
index 9a883ab..5076721 100644 (file)
--- a/drivers/staging/rtl8188eu/core/rtw_mlme_ext.c
+++ b/drivers/staging/rtl8188eu/core/rtw_mlme_ext.c
@@ -5376,8 +5376,8 @@ u8 tx_beacon_hdl(struct adapter *padapter, unsigned char *pbuf)
 #ifdef CONFIG_88EU_AP_MODE
        else { /* tx bc/mc frames after update TIM */
                struct sta_info *psta_bmc;
-               struct list_head *xmitframe_plist, *xmitframe_phead;
-               struct xmit_frame *pxmitframe = NULL;
+               struct list_head *xmitframe_phead;
+               struct xmit_frame *pxmitframe, *n;
                struct sta_priv *pstapriv = &padapter->stapriv;
 
                /* for BC/MC Frames */
@@ -5390,11 +5390,8 @@ u8 tx_beacon_hdl(struct adapter *padapter, unsigned char *pbuf)
                        spin_lock_bh(&psta_bmc->sleep_q.lock);
 
                        xmitframe_phead = get_list_head(&psta_bmc->sleep_q);
-                       list_for_each(xmitframe_plist, xmitframe_phead) {
-                               pxmitframe = list_entry(xmitframe_plist,
-                                                       struct xmit_frame,
-                                                       list);
-
+                       list_for_each_entry_safe(pxmitframe, n, xmitframe_phead,
+                                                list) {
                                list_del_init(&pxmitframe->list);
 
                                psta_bmc->sleepq_len--;